Extractant | Remark | Reference |
D2EHPA―phosphoric acid | Mn removed from Co EW in the pilot Mn SX circuit continuous operation for separation of Mn from Co at pH 4.2 extraction order Zn2 (Ca > Mn > Cu > Co > Ni > Mg). Optimum pH 3 for Mn from Co at 23˚C optimum pH 3.5 for Mn from Ni at 40˚C - 60˚C. | Dry et al. [42] Feather et al. [43] Hoh et al. [44] Chang [45] [46] |
PC88A―phosphoric acid | Fe( | Dreisinger and Cooper [47] |
Cyanex®272―phosphonic acid | Bulong process Co, Cu, Zn and Mn from Ni at pH 6 and 50˚C Zn > Cu > Mn > Co > Mg > Ca > Ni | Taylor and Cains [48] Hubicki and Hubicka [49] |
D2EHPA | Separation of Mn from Ca and Ni | Cole [50] |
PC88A | D2EHPA best with β Mn/Co |
|
Cyanex®272 | Max. at pH 4.45 D2EHPA > PC88A > Cyanex 272 | Devie et al. [51] |